In fact, TPM's electoral map is one of the more pro-Obama projections. The electoral map that excludes Rasmussen polls has the same electoral votes for Romney and is the only electoral map that I've seen more positive for Obama.
I do not like throwing data out. No scientist would do that, biased or not. There are always biases. Throwing out data is never acceptable. That's why there are error bars and why statistics tells us how to calculate them.
Another issue here. If you disagree about methodology, you cannot merely criticize the outcome. You have to criticize the methodology itself. These polls publish their methods. Just because you do not like the results doesn't mean the poll's methods are biased.
Polling is a messy art. Probably, the only way to get accuracy is to take the data as a whole. If you arbitrarily throw our a Republican leaning outlier, you should probably throw out Democratic leaning polls, too. Of course, this would be a slippery slope. Where do you draw the line?
No. Do not throw out any data. Use it all. The biases will average out, at the cost of uncertainty. That's how the statistics work.
TPM's electoral map is fine, especially since they don't throw out data.
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